1. To display the first 10 lines of a file:
This displays the first 10 lines of the file vi.txt which is in the directory /usr/local/docs/FR.
2. To display the first 5 lines of several files:
head -5 *.xdh
This displays, one after the other the first 5 lines of each file with the ex10sion .xdh in the current directory.
The first line of each file is shown as:
==> filename <==